<template>
	<view class="goods-list">
		<view v-for="(item,index) in goodList" :key="index" @click="gotoDetail(item)">
		<!-- 为my-goods组件动态绑定goods属性的值 -->
		<my-goods :goods="item"></my-goods>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				//请求参数对象
				queryObj:{
					//查询关键词
					query:'',
					//商品分类id
					cid:'',
					//页码值
					pagenum:1,
					//每页显示多少条数据
					pagesize:10,
				},
				//节流阀
				isloading:false,
				//商品列表的数据
				goodList:[],
				//总数量，用来实现分页
				total:0
			};
		},
		onLoad(options) {
			//将页面参数转存到this.queryObj对象中
			this.queryObj.query = options.query || ''
			this.queryObj.cid = options.cid || ''
			this.getGoodsList()
		},
		methods:{
			//获取商品数据列表
			async getGoodsList(cb){
				//打开节流阀
				this.isloading = true
				const {data:res} = await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
				//关闭节流阀
				this.isloading = false
				//只要数据请求完毕，就立即按需调用cb回调函数
				cb&&cb()
				if(res.meta.status!==200){
					uni.$showMsg()
					return
				}
				this.goodList = [...this.goodList,...res.message.goods]
				this.total = res.message.total
			},
			//跳转到商品详情页面
			gotoDetail(item){
				uni.navigateTo({
					url:'/subpkg/goods_detail/goods_detail?goods_id='+item.goods_id
				})
			}
		},
		//触底事件处理函数
		onReachBottom() {
			//判断是否还有下一页数据
			if(this.queryObj.pagenum*this.queryObj.pagesize>=this.total)
			return uni.$showMsg('数据加载完毕！')
			if(this.isloading) return
			//页码自增一
			this.queryObj.pagenum += 1
			//重新获取列表数据
			this.getGoodsList()
		},
		//下拉刷新处理函数
		onPullDownRefresh() {
			//重置关键数据
			this.queryObj.pagenum = 1
			this.total = 0
			this.isloading = false
			this.goodList = []
			//重新发起请求
			this.getGoodsList(()=>uni.stopPullDownRefresh())
		}
	}
</script>

<style lang="scss">

</style>
